linux.git/tools/testing/selftests/kvm/Makefile, branch v6.6

Merge tag 'kvm-riscv-6.6-1' of https://github.com/kvm-riscv/linux into HEAD

2023-08-31T17:25:55+00:00

KVM/riscv changes for 6.6

- Zba, Zbs, Zicntr, Zicsr, Zifencei, and Zihpm support for Guest/VM
- Added ONE_REG interface for SATP mode
- Added ONE_REG interface to enable/disable multiple ISA extensions
- Improved error codes returned by ONE_REG interfaces
- Added KVM_GET_REG_LIST ioctl() implementation for KVM RISC-V
- Added get-reg-list selftest for KVM RISC-V

KVM: s390: selftests: Add selftest for single-stepping

2023-08-28T09:24:20+00:00

Test different variations of single-stepping into interrupts:

- SVC and PGM interrupts;
- Interrupts generated by ISKE;
- Interrupts generated by instructions emulated by KVM;
- Interrupts generated by instructions emulated by userspace.

Reviewed-by: Claudio Imbrenda 
Signed-off-by: Ilya Leoshkevich 
Message-ID: <20230725143857.228626-7-iii@linux.ibm.com>
Signed-off-by: Claudio Imbrenda 
[frankja@de.igm.com: s/ASSERT_EQ/TEST_ASSERT_EQ/ because function was
renamed in the selftest printf series]
Signed-off-by: Janosch Frank

KVM: riscv: selftests: Add get-reg-list test

2023-08-09T06:45:27+00:00

get-reg-list test is used to check for KVM registers regressions
during VM migration which happens when destination host kernel
missing registers that the source host kernel has. The blessed
list registers was created by running on v6.5-rc3

Signed-off-by: Haibo Xu 
Reviewed-by: Andrew Jones 
Signed-off-by: Anup Patel

KVM: arm64: selftests: Split get-reg-list test code

2023-08-09T06:44:43+00:00

Split the arch-neutral test code out of aarch64/get-reg-list.c into
get-reg-list.c. To do this we invent a new make variable
$(SPLIT_TESTS) which expects common parts to be in the KVM selftests
root and the counterparts to have the same name, but be in
$(ARCH_DIR).

There's still some work to be done to de-aarch64 the common
get-reg-list.c, but we leave that to the next patch to avoid
modifying too much code while moving it.

Signed-off-by: Andrew Jones 
Signed-off-by: Haibo Xu 
Signed-off-by: Anup Patel

KVM: selftests: Add a selftest for guest prints and formatted asserts

2023-08-02T21:42:52+00:00

Add a test to exercise the various features in KVM selftest's local
snprintf() and compare them to LIBC's snprintf() to ensure they behave
the same.

This is not an exhaustive test.  KVM's local snprintf() does not
implement all the features LIBC does, e.g. KVM's local snprintf() does
not support floats or doubles, so testing for those features were
excluded.

Testing was added for the features that are expected to work to
support a minimal version of printf() in the guest.

Signed-off-by: Aaron Lewis 
[sean: use UCALL_EXIT_REASON, enable for all architectures]
Link: https://lore.kernel.org/r/20230731203026.1192091-4-seanjc@google.com
Signed-off-by: Sean Christopherson

KVM: selftests: Add guest_snprintf() to KVM selftests

2023-08-02T21:41:59+00:00

Add a local version of guest_snprintf() for use in the guest.

Having a local copy allows the guest access to string formatting
options without dependencies on LIBC.  LIBC is problematic because
it heavily relies on both AVX-512 instructions and a TLS, neither of
which are guaranteed to be set up in the guest.

The file guest_sprintf.c was lifted from arch/x86/boot/printf.c and
adapted to work in the guest, including the addition of buffer length.
I.e. s/sprintf/snprintf/

The functions where prefixed with "guest_" to allow guests to
explicitly call them.

A string formatted by this function is expected to succeed or die.  If
something goes wrong during the formatting process a GUEST_ASSERT()
will be thrown.

Signed-off-by: Aaron Lewis 
Link: https://lore.kernel.org/all/mtdi6smhur5rqffvpu7qux7mptonw223y2653x2nwzvgm72nlo@zyc4w3kwl3rg
[sean: add a link to the discussion of other options]
Link: https://lore.kernel.org/r/20230729003643.1053367-6-seanjc@google.com
Signed-off-by: Sean Christopherson

KVM: selftests: Add strnlen() to the string overrides

2023-08-02T21:41:59+00:00

Add strnlen() to the string overrides to allow it to be called in the
guest.

The implementation for strnlen() was taken from the kernel's generic
version, lib/string.c.

This will be needed when printf() is introduced.

Signed-off-by: Aaron Lewis 
Link: https://lore.kernel.org/r/20230729003643.1053367-5-seanjc@google.com
Signed-off-by: Sean Christopherson

Merge tag 'kvm-x86-selftests-6.5' of https://github.com/kvm-x86/linux into HEAD

2023-07-01T11:19:09+00:00

KVM selftests changes for 6.5:

 - Add a test for splitting and reconstituting hugepages during and after
   dirty logging

 - Add support for CPU pinning in demand paging test

 - Generate dependency files so that partial rebuilds work as expected

 - Misc cleanups and fixes

Merge tag 'kvm-s390-next-6.5-1' of https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD

2023-07-01T11:00:11+00:00

* New uvdevice secret API
* New CMM selftest
* cmm fix
* diag 9c racy access of target cpu fix

KVM: s390: selftests: add selftest for CMMA migration

2023-06-16T09:05:31+00:00

Add a selftest for CMMA migration on s390.

The tests cover:
- interaction of dirty tracking and migration mode, see my recent patch
  "KVM: s390: disable migration mode when dirty tracking is disabled" [1],
- several invalid calls of KVM_S390_GET_CMMA_BITS, for example: invalid
  flags, CMMA support off, with/without peeking
- ensure KVM_S390_GET_CMMA_BITS initally reports all pages as dirty,
- ensure KVM_S390_GET_CMMA_BITS properly skips over holes in memslots, but
  also non-dirty pages

Note that without the patch at [1] and the small fix in this series, the
selftests will fail.

[1] https://lore.kernel.org/all/20230127140532.230651-2-nrb@linux.ibm.com/

Signed-off-by: Nico Boehr 
Reviewed-by: Claudio Imbrenda 
Message-Id: <20230324145424.293889-3-nrb@linux.ibm.com>
Signed-off-by: Claudio Imbrenda 
[frankja@linux.ibm.com: squashed
20230606150510.671301-1-nrb@linux.ibm.com / "KVM: s390: selftests:
CMMA: don't run if CMMA not supported"]
Signed-off-by: Janosch Frank